• Check the earths are properly applied • Answer specific questions from the working group
• Ensure the work can proceed without danger
• Complete and verify the “Permit to Work”
Possible residual risks Residual risks must be considered by the drive system integrator and/or plant owner when assessing the hazards of the equipment to personnel. The following risks can pose a hazard to drive system personnel: 1) Electric power equipment generates electro-magnetic fields which can cause a hazard to people with metal implants and / or a pacemaker. 2) Drive system components can move unintentionally when being commissioned, operated, or serviced due to:
• Operation of the equipment outside the scope of the specifications • Incorrectly assembled or installed equipment • Wrongly connected cables • External influence on, or damage of the equipment • Wrong parameter settings • Software errors
• Faulty hardware 3) Hazardous touch voltages can be present on drive system components, which can be caused by:
• Operation of the equipment outside the scope of the specifications
• External influence on, or damage of the equipment
• Induced voltages by external equipment
• Condensation on equipment components, or pollution
• Faulty hardware 4) High temperatures, noise, particles, or gases can be emitted from drive system components caused by:
• Operation of the equipment outside the scope of the specifications
• External influence on or damage of the equipment
• Incorrect parameter settings
• Software errors
• Faulty hardware 5) Hazardous substances can be emitted from drive system components due to incorrect disposal of components